126090145 has 4 divisors (see below), whose sum is σ = 151308180. Its totient is φ = 100872112.

The previous prime is 126090131. The next prime is 126090157. The reversal of 126090145 is 541090621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91374481 + 34715664 = 9559^2 + 5892^2 .

It is a cyclic number.

It is not a de Polignac number, because 126090145 - 2⁷ = 126090017 is a prime.

It is a super-2 number, since 2×126090145² = 31797449332242050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12609010 + ... + 12609019.

It is an arithmetic number, because the mean of its divisors is an integer number (37827045).

Almost surely, 2^126090145 is an apocalyptic number.

It is an amenable number.

126090145 is a deficient number, since it is larger than the sum of its proper divisors (25218035).

126090145 is an equidigital number, since it uses as much as digits as its factorization.

126090145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25218034.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 126090145 is about 11228.9868198337. The cubic root of 126090145 is about 501.4493215417.

The spelling of 126090145 in words is "one hundred twenty-six million, ninety thousand, one hundred forty-five".